package com.water.utils;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import static org.springframework.util.ObjectUtils.isEmpty;

/**
 * 拦截器
 */
public class inter implements HandlerInterceptor {


    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession httpSession = request.getSession();
                  if(isEmpty(httpSession.getAttribute("user"))){
                      response.sendRedirect("/syEmp/login");
                      System.out.println("请登录");
                      return false;
                  }
                  else {
                      System.out.println("放行");
                      return true;
                  }

    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
